Matache ICEEM'06

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Paper presented at the 6th International Conference on Environmental Engineering and Management, Balatonalmadi (Hungary), September 2011

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Matache ICEEM'06

  1. 1. Food chain biomagnification of heavy metals in samples from the Lower Prut Floodplain Natural Park Presenting author: Marius Lucian Matache , Co-Author(s): Iulia Gabriela David, Alin Tudorache, Gabriel Chisamera, Laurentiu Rozylowicz, Gabriel Lucian Radu Author to whom all the correspondence should be addressed: Marius Lucian Matache, 1 Nicolae Balcescu Blvd., sector 1, 010041 Bucharest, Romania, E-mail: [email_address]
  2. 2. <ul><li>(a) to quantify the concentration of some heavy metals in different levels of the Lower Prut wetland food chains, and </li></ul><ul><li>(b) to assess the extent of these elements transfer from primary producers to primary and secondary consumers. </li></ul>Study objectives
  3. 3. Study area <ul><li>Lower Prut Floodplain Natural Park - recently established protected area, SE border Romania - Moldova; </li></ul><ul><li>More than 8,000 ha, significant resources of wildlife&habitats of communitarian importance </li></ul><ul><li>two European Natura 2000 sites: ROSCI0105 and ROSCI0213; </li></ul>
  4. 4. Study area <ul><li>Prut River: more than 900 km, water from a 27,000 km 2 watershed; </li></ul><ul><li>Agricultural and industrial pollution sources; </li></ul><ul><li>4 elements: Cd, Cu, Pb and Zn; </li></ul><ul><li>Water, sediments, plants, molluscs and fish samples; </li></ul><ul><li>W&S: 6 sampling transects. </li></ul>
  5. 5. Sampling&Methods <ul><li>Samples digestion: HF, HCl, HClO 4 , HNO 3 (sediments) ; HClO 4 , HNO 3 (biological samples); </li></ul><ul><li>Metal determination: ICP-OES * ; </li></ul><ul><li>Detection limits for the method </li></ul><ul><ul><li>0.1 ppb (Cd, Cu); </li></ul></ul><ul><ul><li>1.5 ppb (Pb); </li></ul></ul><ul><ul><li>0.5 ppb (Zn) ; </li></ul></ul>* Matache et al. (2009), Environmental Monitoring and Assessment , 153 (1), 273-279
  6. 6. Metals concentration in water <ul><li>average values – 4 sampling campaigns; </li></ul><ul><li>quite heterogenous; </li></ul><ul><li>issues related to Cu and Pb; </li></ul>
  7. 7. Metals concentration in sediments MAC – Cu: 40 mg/kg * *
  8. 8. Concentration in living organisms Salvinia Elodeea Viviparus Sinanodonta Cyprinus Carassius <ul><li>Positive transfer from Primary to Secondary consumers; </li></ul>
  9. 9. Concentration in living organisms <ul><li>EC threshold value for fish samples - 0.05 ppm </li></ul>Salvinia Elodeea Viviparus Sinanodonta Cyprinus Carassius
  10. 10. Concentration in living organisms <ul><li>significant concentration only in plants; </li></ul>Salvinia Elodeea Viviparus Sinanodonta Cyprinus Carassius
  11. 11. Concentration in living organisms <ul><li>Values between 14.10 µg/g and 745.28 µg/g; </li></ul><ul><li>Bevoets et. al (2009) captivity study; </li></ul>Salvinia Elodeea Cyprinus Carassius
  12. 12. Biomagnification factors (BMF) A1. Salvinia natans A2. Elodeea canadensis B1. Viviparus sp. B2. Sinanodonta woodiana C1. Cyprinus carpio C2. Carassius gibelio
  13. 13. Conclusions <ul><li>Zn, Co - dominant trace elements in Prut ecosystem; </li></ul><ul><li>Zinc concentration in fish samples requires an extended analysis in order to evaluate the ecotoxicological risk involved; </li></ul><ul><li>Cd and Pb – traces in molluscs and fish samples; </li></ul><ul><li>partial bioaccumulation appear, but not along entire food chains; </li></ul><ul><li>Trace elements concentration dynamics - influenced by frequent changes in water level and regime. </li></ul>
  14. 14. Acknowledgements <ul><li>Romanian Ministry of Education, Research, Youth and Sport through the PN II project no. 32111/2008. </li></ul><ul><li>Dr. Marius Matache was supported by the strategic grant POSDRU/89/1.5/S/58852, Project „Postdoctoral programme for training scientific researchers” cofinanced by the European Social Found within the Sectorial Operational Program Human Resources Development 2007 – 2013. </li></ul>

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